1) What type of wave is shown? a) transverse wave b) longitudinal wave 2) Which of the following is correct? a) A = trough b) B = amplitude c) C = wavelength d) D = crest 3) The vibration of particles in the medium is perpendicular to the direction of motion of the wave. Which type of wave is being described? a) Transverse wave b) Longitudinal wave 4) The highest point of a transverse wave is called a _________. a) trough b) amplitude c) wavelength d) crest 5) Which is the definition of wavelength?  a) The distance between two successive crests or troughs b) The strength of the wave c) The highest point of a transverse wave d) The lowest point of a transverse wave 6) Which of the following is an example of longitudinal wave? (TWO answers) a) Water wave b) Wave in a string c) Sound wave d) Wave in a spring 7) Frequency is the a) intensity of sound b) loudness of sound c) number of vibration per second d) amplitude of sound 8) Higher frequency shows a) louder sound b) lower pitch c) softer sound d) higher note 9) Hertz (Hz) is the SI unit for a) amplitude b) frequency 10) Greater volume of a sound shows a higher value of a) decibel (dB) b) Hertz (Hz) c) wavelength (m) 11) By using the formula: v=f⋋, calculate the wavelength of the sound if the frequency of the sound wave is 800 Hz and the speed of sound in air is 600 ms-1 a) 1.33m b) 0.75m c) 0.5m d) 0.48m 12) If the wavelength of a certain wave motion are 5000cm, it vibrates 50 times every second. What is the speed of the wave? a) 100ms-1 b) 250ms-1 c) 2500ms-1 d) 1ms-1 13) The sound that is beyond human audible range is a) 13 Hz b) 500 Hz c) 9000 Hz d) 15000 Hz 14) Sound wave with frequency 22000 Hz is categorised as  a) infrasound b) ultrasound 15) Which is incorrect about ultrasound? a) Short wavelength b) Strong penetration power c) Used in pregnancy scan d) Produced by bats, dolphins, cats and dogs 16) Which is used to detect leakage of natural gas, earthquake and volcanoes? a) ultrasound b) infrasound 17) Which of the electromagnetic wave has the longest wavelength and lowest frequency? a) Microwave b) Ultraviolet c) Gamma ray d) Radiowave 18) The electromagnetic wave that gives thermal effect (heat) is a) visible light b) infrared c) radiowave d) microwave 19) Which of the electromagnetic wave is used in communication? a) gamma ray b) radiowave c) microwave d) infrared 20) Which of the electromagnetic wave helps in the absorption of calcium and promote the synthesis of vitamin D in teeth and bones? a) microwave b) x-ray c) infrared d) ultraviolet ray 21) Which of the electromagnetic wave is used to kill bacteria? a) ultraviolet ray b) microwave c) radiowave d) x-ray 22) Which of the electromagnetic wave is used to kill cancer cells? a) x-ray b) gamma ray c) ultraviolet ray d) microwave 23) Which of the following is correct? a) gamma ray has the highest energy content. b) x-ray has the shortest wavelength and strongest penetration power. c) Visible light keep us warm. d) x-ray is the most harmful electromagnetic wave. 24) Which of the radiowave has the shortest wavelength and highest freqeuncy? a) middle wave b) short wave c) long wave d) microwave 25) Which of the visible light colour has the shortest wavelength and highest frequency? a) red b) purple c) violet d) white

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